Nguyễn Ngọc Trường Sơn ([ŋʷiəŋ˨˦ ŋawʔk͡p̚˨ˀ˧ʔ ʈɨ̞̠əŋ˨˩ ʂəːŋ˧˥]; born 23 February 1990) is a Vietnamese chess player. He is the youngest Vietnamese ever to become a Grandmaster, and one of the youngest grandmasters in the history of the game, having qualified for the title at the age of fourteen.

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